﻿#region Copyright 2009-2011 by Roger Knapp, Licensed under the Apache License, Version 2.0
/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#endregion
using System;
using System.Collections.Generic;
using System.Net;
using System.Net.NetworkInformation;

namespace CSharpTest.Net.SslTunnel.Test
{
	static class TestPort
	{
		static int _lastPortUsed = 11000;
		public static int Create()
		{
			Dictionary<int, IPEndPoint> portsInUse = new Dictionary<int, IPEndPoint>();
			IPGlobalProperties globalProperties = IPGlobalProperties.GetIPGlobalProperties();
			foreach (IPEndPoint endpoint in globalProperties.GetActiveTcpListeners())
				portsInUse[endpoint.Port] = endpoint;

			while (++_lastPortUsed < int.MaxValue)
			{
				if (!portsInUse.ContainsKey(_lastPortUsed))
					return _lastPortUsed;
			}
			return -1;
		}

	}
}
